1.An unknown immiscible liquid seeps into the bottom of an openoil tank. Some measurements indicate that the depth of theunkown liquid is 1.5m and the depth of the oil ( specific weight =8.5 kN/m3) floating on top is 5m. A pressure gageconnected to the bottom of the tank reads 65 kPa. What is thespecific gravity of the unkown liquid?
2.Is it ever necessary to conduct a hydrometer analysis whenclassifying soils according to the USCS, or is sieve analysisalways sufficient?